The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2009
Filed:
Dec. 21, 2005
Hideki Ishida, Osaka, JP;
Chikara Ishihara, Osaka, JP;
Shingo Yoshida, Osaka, JP;
Kyocera Mita Corporation, Osaka, JP;
Abstract
Uneven image density produced by photoreceptors, in which uneven electrification and sensitivity coexist, is limited economically and space efficiently. For each segment of the surface of the photoreceptor, individual memorizing of slope information Kdefining the slope of when a pixel gradation is approximately linear-transformed into exposure amount and, based upon Kper segment, individual transforming of pixel gradation into the exposure amount (individual exposure amount transformation) is performed. The slope information which, with a reference electric potential Vs, matches the electric potential after the exposure of when the exposure amount, obtained by transforming a reference pixel gradation Isby means of the individual exposure amount transformation, is applied to the approximately-linear exposure property excepting the converging region to a residual potential VL, or to the exposure property extended by extrapolation operation, among exposure property gshowing correspondence between the exposure amount and the electric potential after exposure per segment.